<template>
  <el-dialog :title="title" :visible.sync="visible" width="400px" @close="cancel">
    <div style="margin-bottom: 10px">
      <el-link type="primary" style="font-size:12px" @click="importTemplate">下载导入模板</el-link>
    </div>

    <el-upload
      ref="upload"
      :limit="1"
      accept=".xlsx, .xls"
      :headers="upload.headers"
      :action="upload.url + '?updateSupport=' + upload.updateSupport"
      :disabled="upload.isUploading"
      :on-progress="handleFileUploadProgress"
      :on-success="handleFileSuccess"
      :auto-upload="false"
      drag
    >
      <i class="el-icon-upload"></i>
      <div class="el-upload__text">
        将文件拖到此处，或
        <em>点击上传</em>
      </div>
      <div class="el-upload__tip" slot="tip">
        <el-checkbox v-model="upload.updateSupport"/>
        是否更新已经存在的数据
      </div>
      <div class="el-upload__tip" style="color:red" slot="tip">提示：仅允许导入“xls”或“xlsx”格式文件！</div>
    </el-upload>
    <div slot="footer" class="dialog-footer">
      <el-button type="primary" @click="submitFileForm">确 定</el-button>
      <el-button @click="cancel">取 消</el-button>
    </div>
  </el-dialog>
</template>
<script>
  import {getToken} from "@/utils/auth";

  export default {
    props: {
      options: Object
    },
    data() {
      return {
        visible: true,
        // 表单参数
        form: {},
        // 用户导入参数
        upload: {
          // 是否显示弹出层（上位机导入）
          open: true,
          // 弹出层标题（上位机导入）
          title: "导入",
          // 是否禁用上传
          isUploading: false,
          // 是否更新已经存在的上位机数据
          updateSupport: 0,
          // 设置上传的请求头部
          headers: {Authorization: "Bearer " + getToken()},
          // 上传的地址
          url: process.env.VUE_APP_BASE_API + this.options.url
        }
      }
    },
    computed: {
      title() {
        return this.options.title || '导入';
      }
    },
    methods: {
      /** 下载模板操作 */
      importTemplate() {
        window.open(process.env.VUE_APP_BASE_API + this.options.templateUrl)
      },
      // 取消按钮
      cancel() {
        this.$emit('close');
      },
      // 文件上传中处理
      handleFileUploadProgress(event, file, fileList) {
        this.upload.isUploading = true;
      },
      // 文件上传成功处理
      handleFileSuccess(response, file, fileList) {
        this.upload.open = false;
        this.upload.isUploading = false;
        this.$refs.upload.clearFiles();
        this.$alert(response.msg, "导入结果", {dangerouslyUseHTMLString: true});
        this.$emit('success');
      },
      // 提交上传文件
      submitFileForm() {
        this.$refs.upload.submit();
      }
    }
  }
</script>
